AOZ1110QI Alpha & Omega Semiconductor Inc, AOZ1110QI Datasheet
AOZ1110QI
Specifications of AOZ1110QI
Related parts for AOZ1110QI
AOZ1110QI Summary of contents
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... General Description The AOZ1110QI is a high efficiency, easy to use, 4A synchronous buck regulator optimized for portable electronic devices. The AOZ1110QI works from a 2.7V to 5.5V input voltage range, and provides continuous output current with an output voltage adjustable down to 0.8V. With a 1% output accuracy rating, the AOZ1110 is designed for low tolerance applications, such as DSPs and FPGAs ...
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... Ordering Information Part Number Ambient Temperature Range AOZ1110QI -40°C to +85°C AOS Green Products use reduced levels of Halogens, and are also RoHS compliant. Please visit www.aosmd.com/web/quality/rohs_compliant.jsp Pin Configuration COMP Pin Description Pin Number Pin Name 1 COMP External loop compensation pin The FB pin is used to determine the output voltage via a resistor divider between the output and GND ...
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Functional Block Diagram UVLO EN & POR Reference Softstart & Bias SS + 0.8V EAmp FB – COMP PGood Logic PGOOD FESL Absolute Maximum Ratings Exceeding the Absolute Maximum ratings may damage the device. Parameter Supply Voltage ( ...
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Electrical Characteristics T = 25° 3.3V, unless otherwise specified Symbol Parameter V Supply Voltage IN V Input Under-Voltage Lockout UVLO Threshold I Supply Current (Quiescent Shutdown Supply Current OFF V Feedback ...
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Electrical Characteristics (Continued 25° 3.3V, unless otherwise specified Symbol Parameter PWM OUTPUT STAGE R High-Side PFET On-Resistance DS(ON) High-Side PFET Leakage R Low-Side NFET On-Resistance DS(ON) Low-Side NFET Leakage POWER GOOD ...
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Typical Performance Characteristics Circuit of Figure 1 with internal soft-start. T Switching Waveforms at Light Load 400ns/div Start Up Waveforms 200us/div Load Transient Waveforms 1ms/div Rev. 1.0 October 2010 = 25° 3.3V 1.2V unless ...
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Efficiency Efficiency (f = 1MHz 5V) vs. Load Current SW IN 100 0.5 1.0 1.5 2.0 2.5 Load Current (A) Efficiency (f = 500kHz 5V) vs. Load Current SW IN ...
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... A pull- up resistor (R3) should connect this pin power trail with maximum voltage no higher than 6V. The AOZ1110QI monitors the FB voltage: when the FB pin voltage is lower than 85% of the target voltage or higher than 115% of the target voltage, N-MOSFET turns on and the power good pin is pulled low, which indicates the power is abnormal ...
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... Figure 1. Component selection is explained below. Input Capacitor The input capacitor must be connected to the V PGND pin of AOZ1110QI to maintain steady input voltage and filter out the pulsing input current. The voltage rating of input capacitor must be greater than maximum input voltage plus ripple voltage. ...
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... Loop Compensation The AOZ1110QI employs peak current mode control for easy use and fast transient response. Peak current mode control eliminates the double pole effect of the output L&C filter. It greatly simplifies the compensation loop design ...
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... COMP pin sets the pole-zero and is adequate for a stable high-bandwidth control loop. In the AOZ1110QI, FB pin and COMP pin are the inverting input and the output of internal error amplifier. A series R and C compensation network connected to COMP provides one pole and one zero ...
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... PGND pin of the AOZ1110QI. In the AOZ1110QI buck regulator circuit, the major power dissipating components are the AOZ1110QI and the output inductor. The total power dissipation of converter circuit can be measured by input power minus output power: × ...
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Package Dimensions, QFN 4x4-24L 19 2 INDEX AREA (D/2xE/2) 24 ccc ddd C PIN#1 DIA R0. e Rev. 1.0 October 2010 ...
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Package Dimensions, QFN 4x4-24L RECOMMENDED LAND PATTERN 0.30 0.50 0.05 1.25 0.25 x 45˚ Dimensions in millimeters Symbols Min. 0. 0.00 A3 0.20 REF b 0.20 4.00 BSC D D1 2.50 E 4.00 BSC E1 1.15 0.85 E2 ...
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Tape and Reel Dimensions, QFN 4x4-24L Carrier Tape UNIT: MM Package A0 B0 QFN 4x4 4.35 4.35 (12 mm) ±0.10 ±0.10 Reel R UNIT: MM Tape Size Reel Size ø ø 330 ...
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Part Marking Fab & Assembly Location This datasheet contains preliminary data; supplementary data may be published at a later date. Alpha & Omega Semiconductor reserves the right to make changes at any time without notice. LIFE SUPPORT POLICY ALPHA & ...